Title: Organic modification of mesoporous silicon rugate filters: the influence of nanoarchitecture on optical behaviour

Authors: Kristopher A. Kilian, Till Bocking, Leo M.H. Lai, Suhrawardi Ilyas, Katharina Gaus, Michael Gal, J. Justin Gooding

Addresses: School of Chemistry, University of New South Wales, Sydney 2052, Australia. ' School of Chemistry and School of Physics, University of New South Wales, Sydney 2052, Australia. ' School of Chemistry, University of New South Wales, Sydney 2052, Australia. ' School of Physics, University of New South Wales, Sydney 2052, Australia. ' Centre for Vascular Research, University of New South Wales, Sydney 2052, Australia. ' School of Physics, University of New South Wales, Sydney 2052, Australia. ' School of Chemistry, University of New South Wales, Sydney 2052, Australia

Abstract: The internal nanostructure and optical properties of mesoporous silicon rugate filters prepared on different p⁺ type silicon substrates are compared for applications in biosensing. Chemical derivatisation of the internal surface by undecenoic acid hydrosilylation results in red-shifting of the resonant wavelength of the filter, whereby the magnitude of the red shift is found to be a function of the pore morphology. The pore structure was found to play a significant role during infiltration of protein into the photonic crystal.

Keywords: porous silicon; photonic crystal; hydrosilylation; rugate filters; optical biosensors; mesoporous silicon; nanostructure; optical properties; nanotechnology; Australia; pore structure.

DOI: 10.1504/IJNT.2008.016914

International Journal of Nanotechnology, 2008 Vol.5 No.2/3, pp.170 - 178

Published online: 30 Jan 2008 *

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